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WHAT'S NEW
Simplifying Authenticated Cloud Connectivity for Any Device.
How Wi-Fi and Cellular connectivity modules with ExpressLink can help create secure cloud connected devices. See the blog post.
Designing an energy efficient and cloud-connected IoT solution with CoAP.
A client/server, request/response, UDP-based protocol for efficiency and cloud compatibility. See the blog post.
Introducing FreeRTOS Kernel version 11.0.0:
A Major Release with Symmetric Multiprocessing (SMP) Support. See the blog post.
FreeRTOS Roadmap and Code Contribution process.
The FreeRTOS roadmap and code contribution process are now published here and on GitHub. See the blog post.
OPC-UA over TSN with FreeRTOS.
A development project to give applications consistent access to hardware TSN capabilities. See the blog post.

Porting the Cellular Interface Library to another Modem

FreeRTOS now supports the AT commands of a TCP offloaded Cellular abstraction Layer. In order to add support for a new cellular modem, a developer can use the common component that has already implemented the 3GPP standard AT commands.

In order to port the common component:

  1. Implement the cellular modem porting interface defined in cellular_common_portable.h (Documentation).
  2. Implement the subset of the Cellular Interface library API's that use vendor-specific (non-3GPP) AT commands. The APIs to be implemented are the ones not marked with an "o" in this table.
  3. Implement the Cellular Interface library callback functions that handle vendor-specific (non-3GPP) Unsolicited Result Codes (URC). The URC handlers to be implemented are the ones not marked with an "o" in this table.

The Cellular common APIs document provides detailed information required for each step. We recommend that you start by cloning the implementation of one of the existing modems, then make modifications where your modem's vendor-specific (non-3GPP) AT commands are different.

Current Example Implementations:

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